[mpich-discuss] hydra_pmi_proxy: No such file

Fri Oct 5 16:04:27 CDT 2012

Hi Pavan.

I've got some more information that might give some insight into what is happening on my system.

When I do ldd ./cpi on the base node where nfs is installed and mpich was compiled I get  some paths to libraries, but when I do it on the other node I get the message that ./cpi is not a dynamic executable.

When I do mpicc ./child.c, an a.out is produced, when I do the same thing on the other node I get messages like:

/usr/bin/ld: skipping incompatible /mirror/mpich2/lib/libmpich.a when searching for -lmpich.

Also, a simple invocation of ./cpi on the main node works, but gives the error message: bash: ./cpi: No such file or directory when run on the other node.

I have mpich and the user mpiu installed on nfs.   Could it be that the binaries compiled on one node are not compatible with the processor on the other node?

Martin. 

________________________________
 From: Pavan Balaji <balaji at mcs.anl.gov>
To: Martin Gilchrist <gilchrist.martin at yahoo.com> 
Cc: mpich-discuss at mcs.anl.gov 
Sent: Wednesday, October 3, 2012 8:29 PM
Subject: Re: [mpich-discuss] hydra_pmi_proxy: No such file

This is weird.  Can you run mpiexec with the -verbose option and send 
the output?

  -- Pavan

On 10/03/2012 05:09 PM, Martin Gilchrist wrote:
> Yes.
>
> The first is the machine where nfs host machine and the second is the
> other node.
>
>
> mpiu at martinlaptop-HP-Pavilion-dm4-Notebook-PC:~$ hostname
> martinlaptop-HP-Pavilion-dm4-Notebook-PC
> mpiu at martinlaptop-HP-Pavilion-dm4-Notebook-PC:~$ ls -l
> /mirror/mpich2/bin/mpiexec
> lrwxrwxrwx 1 mpiu mpiu 13 2012-10-03 14:32 /mirror/mpich2/bin/mpiexec ->
> mpiexec.hydra
> mpiu at martinlaptop-HP-Pavilion-dm4-Notebook-PC:~$ ls -l
> /mirror/mpich2/bin/mpiexec.hydra
> -rwxr-xr-x 1 mpiu mpiu 1065207 2012-10-03 14:32
> /mirror/mpich2/bin/mpiexec.hydra
> mpiu at martinlaptop-HP-Pavilion-dm4-Notebook-PC:~$ ls -l
> /mirror/mpich2/bin/hydra_pmi_proxy
> -rwxr-xr-x 1 mpiu mpiu 851803 2012-10-03 14:32
> /mirror/mpich2/bin/hydra_pmi_proxy
> mpiu at martinlaptop-HP-Pavilion-dm4-Notebook-PC:~$
>
>
>
>
> mpiu at martin-desktop:~$ ls -l /mirror/mpich2/bin/mpiexec
> lrwxrwxrwx 1 mpiu mpiu 13 2012-10-03 14:32 /mirror/mpich2/bin/mpiexec ->
> mpiexec.hydra
> mpiu at martin-desktop:~$ ls -lat /mirror/mpich2/bin/mpiexec.hydra
> -rwxr-xr-x 1 mpiu mpiu 1065207 2012-10-03 14:32
> /mirror/mpich2/bin/mpiexec.hydra
> mpiu at martin-desktop:~$ ls -l /mirror/mpich2/bin/hydra_pmi_proxy
> -rwxr-xr-x 1 mpiu mpiu 851803 2012-10-03 14:32
> /mirror/mpich2/bin/hydra_pmi_proxy
> mpiu at martin-desktop:~$
>
>
> ------------------------------------------------------------------------
> *From:* Pavan Balaji <balaji at mcs.anl.gov>
> *To:* Martin Gilchrist <gilchrist.martin at yahoo.com>
> *Cc:* "mpich-discuss at mcs.anl.gov" <mpich-discuss at mcs.anl.gov>
> *Sent:* Wednesday, October 3, 2012 3:46 PM
> *Subject:* Re: [mpich-discuss] hydra_pmi_proxy: No such file
>
> Hi Martin,
>
> Can you please stick to one configuration?  It's hard for me to tell
> when you are running in which configuration.
>
> Can you please run the following on each of the two machines:
>
> % hostname
>
> % ls -l /mirror/mpich2/bin/mpiexec
>
> % ls -l /mirror/mpich2/bin/hydra_pmi_proxy
>
>    -- Pavan
>
> On 10/03/2012 04:44 PM, Martin Gilchrist wrote:
>  > Yes the two are different.
>  > The one where the proxy is not found is produced when mpiexec is invoked
>  > on the main computer where I have installed nfs and done all the make
>  > and make install of mpich2.  The one with the mpiexec not found is
>  > produced when mpiexec is invoked on the node.
>  > Martin.
>  >
>  > *From:* Pavan Balaji <balaji at mcs.anl.gov <mailto:balaji at mcs.anl.gov>>
>  > *To:* Martin Gilchrist <gilchrist.martin at yahoo.com
> <mailto:gilchrist.martin at yahoo.com>>
>  > *Cc:* mpich-discuss at mcs.anl.gov <mailto:mpich-discuss at mcs.anl.gov>;
> Anthony Chan <chan at mcs.anl.gov <mailto:chan at mcs.anl.gov>>
>  > *Sent:* Tuesday, October 2, 2012 1:39 PM
>  > *Subject:* Re: [mpich-discuss] hydra_pmi_proxy: No such file
>  >
>  >
>  > On 10/02/2012 03:27 PM, Martin Gilchrist wrote:
>  >  > I can ssh into the node and hydra_pmi_proxy is visible and executable.
>  >  > And when I am logged into the node directly it is visible and
> executable.
>  >
>  > Both those statement sound identical.  Did you mean to add a "not"
>  > somewhere there?
>  >
>  >  > One more thing, when I am directly logged into the node and do
>  >  > mpiexec -n 2 -f machinefile ./cpi
>  >  > I get the message:
>  >  > bash:/mirror/mpich2/bin/mpiexec:No such file or directory.
>  >  > It looks like it might be an issue with permissions since bash can't
>  >  > find the executable, but it is visible via which and has executable
>  >  > permission under ls -lat.
>  >
>  > This is not an executable permission issue.  It should say "Permission
>  > denied" for that, not "No such file or directory".
>  >
>  > Can you send me the following output?
>  >
>  > % ls -l /mirror/mpich2/bin/mpiexec
>  >
>  > % /mirror/mpich2/bin/mpiexec -n 2 -f machinefile ./cpi
>  >
>  > I'm having trouble believing that you can see the file, but are getting
>  > the following error, so I'd like to see that myself :-).  Of course,
>  > it's always possible that it's some weird NFS-ness that I'm not aware of.
>  >
>  > -- Pavan
>  >
>  > -- Pavan Balaji
>  > http://www.mcs.anl.gov/~balaji
>  >
>  >
>
> --
> Pavan Balaji
> http://www.mcs.anl.gov/~balaji <http://www.mcs.anl.gov/~balaji>
>
>

-- 
Pavan Balaji
http://www.mcs.anl.gov/~balaji
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